配置HRB600E高强钢筋的混凝土柱抗震性能试验研究
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摘要
HRB600E钢筋是一种新型高强度钢筋,为改善矩形柱抗震性能并推广HRB600E级高强钢筋的应用,通过对6个配置HRB600E钢筋的不同轴压比、不同钢筋强度和纵筋配筋率的混凝土矩形柱进行低周往复荷载试验,得到试件的滞回曲线、骨架曲线和纵筋应变曲线。对比分析高强钢筋混凝土柱的破坏特征、滞回特性、骨架曲线、刚度退化等抗震性能指标。研究结果表明:配置HRB600E高强钢筋的混凝土柱的破坏特征与配置普通钢筋的混凝土柱相似;通过减小轴压比或增加钢筋强度均能改善配置HRB600E高强钢筋试件的滞回特性、减缓刚度退化、提高试件的抗震性能;配置高强钢筋的构件与高强混凝土配合使用时受力性能更优。
HRB600E bar is a new type of high-strength reinforcing bar.For improving the seismic performance of rectangular columns and popularizing the HRB600E bar,the reversed cyclic loading test for different coaxial compression ratio,reinforcement strength and longitudinal reinforcement ratio is firstly carried out for the six high strength reinforced concrete columns with HRB600E bars.Then,the hysteric curve,skeleton curve and longitudinal reinforcement strain curve of specimen under low cyclic reversed loading were obtained.Finally,the failure characteristics,hysteresis characteristics,skeleton curves and stiffness degradation of high strength reinforced concrete columns are analyzed.The results showed that the failure characteristics of the high strength reinforced concrete columns with HRB600E are similar to the common reinforced concrete columns.Reducing the axial compression ratio or increasing the reinforcement strength can improve the hysteresis characteristics of high strength reinforced concrete columns with HRB600E bars.Besides,the seismic performance of the specimen can be improved by reducing stiffness degradation.The mechanical behavior of the high strength reinforced concrete columns is better when used with high strength concrete.
HRB600E bar is a new type of high-strength reinforcing bar.For improving the seismic performance of rectangular columns and popularizing the HRB600E bar,the reversed cyclic loading test for different coaxial compression ratio,reinforcement strength and longitudinal reinforcement ratio is firstly carried out for the six high strength reinforced concrete columns with HRB600E bars.Then,the hysteric curve,skeleton curve and longitudinal reinforcement strain curve of specimen under low cyclic reversed loading were obtained.Finally,the failure characteristics,hysteresis characteristics,skeleton curves and stiffness degradation of high strength reinforced concrete columns are analyzed.The results showed that the failure characteristics of the high strength reinforced concrete columns with HRB600E are similar to the common reinforced concrete columns.Reducing the axial compression ratio or increasing the reinforcement strength can improve the hysteresis characteristics of high strength reinforced concrete columns with HRB600E bars.Besides,the seismic performance of the specimen can be improved by reducing stiffness degradation.The mechanical behavior of the high strength reinforced concrete columns is better when used with high strength concrete.
引文
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[2]MOHAMED M,HOSSAM Z,AMAL A.The behavior of ultra-high-strength reinforced concrete columns under axial and cyclic lateral loads[J].HBRC Journal,2016,12(3):284-295
[3]OUSALEM H,TAKATSU H,ISHIKAWA Y,et al.Use of highstrength bars for the seismic performance ofhighstrength concrete columns[J].Journal of Advanced Concrete Technology,2009,7(1):123-134.
[4]RAUTENBERG J M,PUJOL S,TAVALLALI H,et al.Reconsidering the use of high-strength reinforcement in concrete columns[J].Engineering Structures,2012,37:135-142.
[5]TOKGOZ S,DUNDAR C.Test of eccentrically loaded L-shaped section steel fibre high strength reinforced concrete and composite columns[J].Engineering Structures,2012,38(5):134-141.
[6]KARAYANNIS C G,CHALIORIS C E.Design of partially prestress concrete beams based on the cracking control provisions[J].Engineering Structures,2013,48:402-416.
[7]张萍,陈晓磊,薛松,等.配置高强钢筋混凝土柱抗震性能试验研究[J].结构工程师,2017,33(3):147-155.ZHANG P,CHEN X L,XUE S,et.al.Experimental study on seismic performance of concrete columns reinforced with high-strength steel[J].Structural Engineers,2017,33(3):147-155.
[8]付广东,赵海龙,王铁成,等.配置HRB600E级钢筋异形柱梁柱节点抗震性能试验研究[J].工业建筑,2017;47(3):64-69FU G D,ZHAO H L,WANG T C,et.al.Experiment research on seismic behavior of joints with specially shaped columns and 600 mega pascal rebars[J].Industrial Construction,2017;47(3):64-69
[9]丁红岩,刘源,郭耀华.高强钢筋混凝土结构抗震性能研究[J].建筑结构,2015,45(8):30-34.DING H Y,LIU Y,GUO Y H.Seismic behavior study on concrete structures reinforced with highstrength steel bars[J].Building Structure,2015,45(8):30-34.
[10]RONG X,ZHANG J X,LI Y Y.Seismic behavior of specially shaped column joints with X-shaped reinforced[J].Transaction of Tianjin University,2013,19:110-117.
[11]LI B,PHAM T P.Seismic performance assessment of L-shape reinforce concrete columns[J].ACI Structural Journal,2015,112(6):43-50
[12]WANG T C,LIU X,ZHAO H L.Experimental research on seismic behavior of+-shaped columns reinforced with high-strength steel bars under cyclic loading[J].Journal of Civil Engineer,2015,19(4):982-993
[13]戎贤,段微微,王浩.配置600MPa级高强钢筋T形柱抗震性能试验研究[J].土木建筑与环境工程,2017,39(2):148-154.RONG X,DUAN W W,WANG H.Experimental analysis of seismic behavior of 600 MPa RC T-shape columns[J].Journal of Civil,Architectural and Environmental Engineering,2017,39(2):148-154.
[14]戎贤,乔超男,杨春晖.配置600MPa级钢筋的十字形柱抗震性能试验研究[J].工业建筑,2017,47(6):17-21.RONG X,QIAO C N,YANG C H.Experimental research on seismic behavior of 600 megapascal RCcross-shaped columns[J].Industrial Construction,2017;47(6):17-21.
[15]苏俊省,王君杰,王文彪,等.配置高强钢筋的混凝土矩形截面柱抗震性能试验研究[J].建筑结构学报,2014,35(11):20-27.SU J S,WANG J J,WANG W B,et al.Comparative experimental research on seismic performance of rectangular concrete columns reinforced with high steel[J].Journal of Building Structures,2014,35(11):20-27.(in Chinese)
[16]王君杰,苏俊省,王文彪,等.配置HRB500E,HRB600钢筋的混凝土圆柱抗震性能试验[J].中国公路学报,2015,28(5):94-100.WANG J J,SU J S,WANG W B,et al.Experiment on seismic performance of circular concrete columns reinforced with HRB500E,HRB600steel[J].China Journal of Highwayand Transport,2015,28(5):94-100.(in Chinese
[17]中华人民共和国建设部.混凝土结构设计规范:GB50010-2010[S].北京:中国建筑工业出版社,2010.The Ministry of Construction of the People's Republic of China.Code for design of concrete structures:GB50010-2010[S].Beijing:China Architecture&Building Press,2010.(in China).
[18]刘彬,韩松,王学峰.配置高强钢筋混凝土短柱抗震性能研究[J].工程建设与设计,2017,(6):37-40.LIU B,HAN S,WANG X F.Research on seismic behavior of concrete short columns with HRB600steel bars[J].Construction&Design for Engineering,2017(6):37-40.
[19]张建伟,夏冬瑞,乔崎云,等.HRB600级钢筋高强混凝土柱的轴心受压性能[J].工业建筑,2017,47(11):77-83.ZHANG J W,XIA D R,QIAO Q Y,et al.Research on axial compression performance of high strength concrete columns with HRB600 steel bars[J].Industrial Construction,2017,47(11):77-83.